At least that's what Baseball Reference says...
Rk Player Wt From To
1 Walter Young 320 2005 2005
2 Jonathan Broxton 295 2005 2010
3 Jumbo Brown 295 1925 1941
4 Brad Eldred 290 2005 2010
5 Jon Rauch 290 2002 2010
6 CC Sabathia 290 2001 2010
7 Adam Dunn 285 2001 2010
8 Jeff Fulchino 285 2006 2010
9 Chad Paronto 285 2001 2009
10 Calvin Pickering 283 1998 2005
Provided by Baseball-Reference.com: View Play Index Tool Used
Generated 3/12/2011.
I can't help but see some inherent flaws in Baseball Reference's weight data. For one, you can't just define a player by one measure of weight over his entire career...weight fluctuates a lot over a player's career. Pablo Sandoval just lost 38 pounds for example. Also, nine of the fifteen heaviest players played in 2010. The 25 lightest player...
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